Plurals of some words ending with the letter o

 

It can be difficult to work out the plural of a word ending in -o.  Here are the common plurals of about 30 of them. If there are alternatives, check with your mentor, teacher or tutor for the preferred form in the country where you live.

 

SINGULAR

PLURAL

armadillo

avocado

banjo

bistro

calypso

cargo

casino

cockatoo

contralto

dingo

domino

dynamo

echo

ego

embargo

flamingo

folio

grotto

hero

hippo

innuendo

kangaroo

lasso

mango

motto

pistachio

portfolio

potato

radio

ratio

rhino

stiletto

 

armadillos

avocados

banjos or banjoes

bistros

calypsos

cargos or cargoes

casinos

cockatoos

contraltos or contralti

dingoes

dominoes

dynamos

echoes

egos

embargoes

flamingos or flamingoes

folios

grottoes or grottos

heroes

hippos

innuendos or innuendoes

kangaroos

lassos or lassoes

mangos or mangoes

mottos or mottoes

pistachios

portfolios

potatoes

radios

ratios

rhinos

stilettos

 

 

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